Monochromatic liquid crystal display with high contrast

Details Monochromatic liquid crystal display with high contrast Monochromatic liquid crystal display with high contrast

2008-05-27

2010-02-23

Font, Frank G (Department: 2883)

Liquid crystal cells, elements and systems

With specified nonchemical characteristic of liquid crystal...

Within nematic phase

Reexamination Certificate

active

07667814

ABSTRACT:
An STN liquid crystal display cell includes a liquid crystal layer sandwiched between a first and second transparent substrate, is outwardly provided with a first and second polarizers, and a monochromatic back light. Twist angle of the liquid crystal layer is 95° to 170° or 200° to 280°; a first angle between alignment direction of liquid crystal molecules contacting the first transparent substrate and polarization direction of the first polarizer and a second angle between an alignment direction of liquid crystal molecules contacting the second transparent substrate and polarization direction of the second polarizer are each larger than 0° and smaller than 90°; and sum of the first and second angles is 90°±7°.

REFERENCES:
patent: 2004-062021 (2004-02-01), None

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